Fountain-pen.



No. 740,618. PATENTTD 00T. 6, 190.3.

J. BLAIR. FOUNTAIN PEN.

APPLIOATION FILED APR. 21. 1903.

No MOTEL.

@RumA/m Patented October 6, 1903.

UNiTED STATES PATENT' OFFICE.

JOHN BLAIR, OF NEW YORK, N. Y.

FOUNTAIN-PEN.

SPECIFICATION forming part of Letters PatentNo. 740,618, dated October6, 1903. Application iled April 2l, 1993. Serial No. 153,646. (Nomodel.)

To al?, wiz/0m it may concern:

Be it known that l, JOHN BLAIR, a citizen of the United States, residingat `New York, in the county of New York and State of New York, haveinvented certain new and useful Improvements in Fountain Pens, of whichthe following is a specification.

My invention relates in general to fountainpens, and in part it' isparticularly adapted to those fountain-pens which are designated asstylographic pens. The improved joint is adapted equally well to eitherthe fountainpen carrying apen-nib or to the stylographic pen, as shownin the drawings herewith.

The objects of my invention are to niake joints that will positivelyprevent soiling of the fingers when using the pen; second, to provide aneedle-weight for a purpose to be hereinafter described, and third, toprovide means for more easily withdrawing an empty or exhausted inkcartridge from the penbarrel.

rIhe accompanying drawings illustrate the invention, the various partsof the device being referred to by letters, similar letters denotingcorresponding parts in the several views.

In the drawings, Figure 1 is a side view, partly in section, showing myinvention. Fig. 2 is an enlarged side view of the point -section. Fig. 3is a plan of the inner end of the point-section. Fig. 1l is an enlargedplan of the needle-weight, and Fig. 5 is a side ofthe end of the barrelenlarged.

The letter A indicates the body or barrel of a fountain-pen, having anordinary cap B and an open end threaded to engage the threads on thepoint-section.

C is a bag or cartridge, pervious to liquid, containing a supply ofpowdered or granulated ink soluble in water. c is a cord attached tosaid cartridge C and long enough to extend to the outer end of thebarrel.

D is the needle in the point-section. It has a cylindrical weight dattached to its inner end. d is a hole through the inner end of theweightd, by which the cord cis attached to said weight.

' YV hen the ink supply is exhausted from the cartridge, by unscrewingthe point section and holding the barrel withits open end down theweight d projects from the open end of the barrel, and by it the emptycartridge is easily drawn out, The weight d also draws the needle outfrom the point-section when the point is raised, thereby clearing thebore of said section from sediment and incrustations from the ink. Italso compresses the cartridge as it falls against it if, when the pen isprepared for writing, the penis turned point upward, which causes thecartridge to yield its ink more freely, and so produces a deeper colorof the fluid.

E- denotes the pen section in a fountainpen or the point-section in astylographic pen. As shown in the drawings,ithas a short tapered endwith the usual perforated metal point.

The surface e next to the taper point is milled and forms a shoulderagainst which the open end of the barrel A is adapted to rest. The innerend f of the point-section is threaded to engage the thread in the openend of the barrel A. Between the shoulder e and the end f is a reducedportion, which when the ink-chamber in the body by a channel @I cutacross the threads on the end f of the point-section, and as acontinuation of the airducts one or more slits cr are made through theedge of the threaded end of the barrel A. The channel 'i may be a narrowcut, as shown in Fig. 2, or a broader but shallower cut, as shown inFig. 3. The air in the barrel is thus connected with the outer airthrough the channel ffl, recess h, and slit or slits c, which preventsuction or compression when removing or joining the parts just referredto.

In this invention I have provided two distinct joints between'the barreland the pensection, and these joints are separated by an air-recess h.This recess 71 whose walls are the threaded sides of the body A, retainsby capillary attraction the small quantity of ink ywhich generally worksthrough the ordinary screwjoint; but as an additional guard' I have madea contactjoint at the eXtreme outer edge of the barrel which eectuallyprevents the presence of ink on the exterior of the pen by which thefingers are soiled.

ICO

Having now described Iny invention, what I claim, and desire to secureby Letters Patent, is-

l. In a fountain-pen having an ink-oartridge and a withdrawing oordattached thereto, a weight on said oord, for the purpose specified.

2. In a fountain-pen, having an ink-eartridge and a feed-needle, aweight on said feed-needle for the purposes speeiiied.

3. In a fountain-pen having a barrel with a threaded open end, apoint-section having a threaded end adapted to be screwed into saidbarrel, a shoulder on said point-section to Contact with the edge of thebarrel, a recess between said threaded end and said shoulder, a channelConnecting said recess thereto and a feed-needle with a weight attaehedthereto, means to attach said oord to the weight on said feed -needle,for the purposes herein set forth.

In testimony whereof I have signed Iny name to this specification inpresence of two witnesses.

JoIIN BLAIR.

Vitnesses:

LURINDA A. WILLIAMS, ANNA F. CLANE.

